Canada



.ocrn 3o, 1928..'

J. R. C.ASMITHI INTERNAL coMBus'rIoN ENGINE CYLINDER HEAD Filed April 2o, 1927.1'

A//f//Zf Patented Oct. 3D, 1928.

UNITED STATES .PATENT OFFICE..

INTERNAL-COMBUSTION-ENGINE CYLINIJKER HEAD. I

Application filed April 20, 1927. Serial No. 185:.293.

My invention relates tti-'improvementsVin internal combustion engine cylinder heads in which tlze combustion chamber, sel'mrated.

r ot' the valve can he redueed giving freedom from noise und rihrntion and economy of operntion. third7 to gire unrestricted l'low t0 Lne exhaled ganzes, 'fourth7 to so pluee the inlet .valve that nnraporized particles otA the gasoline would lie deposited on it outer 'face lielween eneh openin f ot' the `ralve. :ind vaporized by the ne.\ ;t f'liurge, litthT to permit in# expensive innehining ol'i rnost of the eolulmstion elnunlier on :recount of its shape, sixth, to prevent the inlet vulve lining heated lay the moet. intermheut ol" the combustion.

I utinn thexe ohjeets hy the design illu traded in the. ueitonlpunw'ing driiwings. in whieh:

Fig. 1 is :t plan rien' of the eylinder head in po. ition on the eylinder liloek. Fig. 2 is :L vertiezil seetion ol' the tx'linder und cylinder hezul ol' :urinternzil eonilnrftiou engine o'l' this improved design. I

ASiulilnr numerada' ret'e'rg'to similar ports throughout the two views.

The eylinder l is fooled hy watereireulntinfr in pnsnges prorideth und the e.\'linder hnV :it one Side thereof the mired exhnlrt pzh- Htge in whieh is the exhnint vulve il. The

'el'linder head tt is eoolezl hy wuter eireulnting in pms-tiges provided therein :unl i.\ n .fepnrute puri from the Cylinder liloehr :ind adapted 'to he suitably attnehed to the @vlinder lz-lorls. -'l`lie.he:1d hanintegral with it tht` rfdved inlet per-mjy 'l in whii'h is the inlet valve and the semi-spherienl onil)u ;tion rlnunher T, the

walls 8 of which are'arehed inte 'n semi-circular form, one side being formed to follow the bore' of the cylinder, nd overlapping to provide a passage for the mixture to pass between` the c :on'iliustion chamber and the cylinder. A spark plug 9 is'inounted in the done of the combustion chamber-7l The construction of the cylinder block and cylinder head is such that; the IQaStpOSibIe elea'raneespuee exists lult-tween the piston 1() and the-inlet valve 2. The topof the piston 1t) being level with the top of the cylinder wall atthe top of the stroke.

' l am aware that prior to my invention internal combustion engineslmre been Iliade with a separate combustion ehamber to one side of the cylinder 'with'a passage thereto and ithsmallelenranee between the topof the stroke and the cylinder heard. I therefore do not claim sueh a combi-nation broadly; but

In an internal eon'ihustion engine, a cylinder, n pistou operativeinA the Cylinder, a domeshaped combustion chfunher otlset' from the plane, of the cylinder, said combustion vchaml'erineluding a hase suhxt'zintiprlly in line with the upper end ot the cylinder-:md a curved upper wall which extends to and in part inwardly orerlies the wall of the cylinder, herr-hy to provide a eonnnunieation between the cylinder and eoml'nmtion chamber openin;r directly into said elnnnher, im inlet gus' passage leading to the eylinderyzln inlet valve eontrollingr the passage und directly overlying the `cylinder, said inlet' valve having a diameter greater than half the diameter of t-hezeylinder, an exhaust valve in the lnre of the eenilnistion ehulnller having :i diameter greater thun hull the dinlneter of the eylinder. the eonnnnniention het ween the eoniliustifm ehzxnzlierslnd e \'lin lerlieinj f lesetlmn halfthe trans- \'er e reetional :Iren of the eylinder to gir-e terlaulenee to the tiring charge. and n spurl; plu;r :irrnnged in the dome nf the eoinliustion ehnmher.

.lOllX REGINALD Cllb'PlX SMITH. 

